The performance of missing transverse energy reconstruction algorithms is
presented using sqrt(s) = 8 TeV proton-proton (pp) data collected with the CMS
detector. Events with anomalous missing transverse energy are studied, and the
performance of algorithms used to identify and remove these events is
presented. The scale and resolution for missing transverse energy, including
the effects of multiple pp interactions (pileup), are measured using events
with an identified Z boson or isolated photon, and are found to be well
described by the simulation. Novel missing transverse energy reconstruction
algorithms developed specifically to mitigate the effects of large numbers of
pileup interactions on the missing transverse energy resolution are presented.
These algorithms significantly reduce the dependence of the missing transverse
energy resolution on pileup interactions. Finally, an algorithm that provides
an estimate of the significance of the missing transverse energy is presented,
which is used to estimate the compatibility of the reconstructed missing
transverse energy with a zero nominal value.

The performance of missing transverse energy reconstruction algorithms is
presented using sqrt(s) = 8 TeV proton-proton (pp) data collected with the CMS
detector. Events with anomalous missing transverse energy are studied, and the
performance of algorithms used to identify and remove these events is
presented. The scale and resolution for missing transverse energy, including
the effects of multiple pp interactions (pileup), are measured using events
with an identified Z boson or isolated photon, and are found to be well
described by the simulation. Novel missing transverse energy reconstruction
algorithms developed specifically to mitigate the effects of large numbers of
pileup interactions on the missing transverse energy resolution are presented.
These algorithms significantly reduce the dependence of the missing transverse
energy resolution on pileup interactions. Finally, an algorithm that provides
an estimate of the significance of the missing transverse energy is presented,
which is used to estimate the compatibility of the reconstructed missing
transverse energy with a zero nominal value.